Systèmes de transmission d'ondes électriques,申请号FRD860972-传众专利搜索

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发明名称	Systèmes de transmission d'ondes électriques
摘要
申请公布号	FR860972(A)	申请公布日期	1941.01.29
申请号	FRD860972	申请日期	1939.07.15
申请人	LE MATERIEL TELEPHONIQUE	发明人
分类号	H03C1/58	主分类号	H03C1/58
代理机构		代理人
主权项
地址

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